Believe it or not, I've also gotten takehomes which took multiple hours, involved some non-trivial data retrieval and management, and gotten rejected with less effort than it took them to prepare the ask.
Later I had a sinking suspicion that it was not a real position, what it was was three brogrammers who found a way to get unemployed rubes to write code for them, for free, so they could deliver it themselves without having the requisite talent.
Are you positive that didn't happen to you too?